Improved modx  of sharpening saws



, I U'NrTED STATES Parietti*- OFFICE.

vvJGSEPH FITDER, 'F' PHILADELPHIA, PENN SYLVANIA.V

A. -IMPROVED MODE OF. SHARPENING SAW S.

Specification forming part of Letters Patent No. 49,0111, dated July 25, 1865.

To all 'whom 'it may concern.- rphery of the saw-plate on a line with the cen- Beit known that I, JOSEPH F. TUDER, ofthe ter of the mandrel; but when the edges of the city and county of Philadelphia, and State of y teeth are to bebeveled the rest should be con- Pennsylvaniaf, have inventedl a new and Imstructed or adjusted to correspond; or the saw roved Mode of Sharpening Saws; andI do may -be canted to e'eet the sameobject by an l ie'reby declare that the followingis afulLclear, experienced workman, with 4the rest in the poand exact description "of the construction and sition represented. f operation of the'same, reference being had to V In. sharpening saws whose teeth have a simithe annexed drawings, making apart of this lar construction to those represented in the, specification, in which- 'drawingstlle operation is as followsz'Thefront f Figure 1 is a plan or -top View of an emeryedge of tooth No. 1 is brought against th'e level Wheel, A, and parts with which it is connected, g or fiat side f of the emery-wheel A, which reand a saw in position `to be sharpened. L Fig.` rvolves with a high velocity in the direction of -2da-aside elevation' e# the Fig. 3f is a the arrow, and then' the'froritledgeof tooth' perspective view of the rest E. No. 2 is sharpened in the same way.` The saw Like letters in all -the gures represent the is then moved in such a. manner as to bring same parts. A the back edge of .the tooth No. 1 against the The nature of my invention and improvebevel partgof the wheel. Then the front edge ment consists in the use of solid emery-wheels oitooth No. 3 is brought against the wheel in in the place of les for sharpening saws, arlike manner, as before explained,and then the ranged and operating as follows: back edge of the tooth No.2, and so on in suci I use a solid emery-wheel, A, of such form cession until the last tooth is sharpened.- on its periphery as will correspond in its gen- With my mode of sharpening saws, as above Y .eral features tothe serrations which vform the explained, a vast amount of time and expense teeth of the s'aw. I place the said wheel on a is saved over the usual mode of sharpening ,l/ mandrel, B,Vwhich is situatedin the head C, with tiles.

L and is made'to revolve with great velocity by What I claim as newand ldesire to secure means of a belt connecting thepulley D with by Letters Patent, is.-

` a driving-pulleyof the motive power. E is a The combination of the devices,'constructed rest on which the saw F is held to be sharp -and arranged substantiailyas herein described, cned, l.the said rest being conned to the bedfor sharpening theteeth of saws. platea of the head C by means of a screw, b, In testimony that the above is my invenwhich passes through the slot c of the bedtion 1 have hereunto set my hand and axed piece d of the rest. The rest is shown in demy seal this 1st day of March, 1865. tail in Fig. 3. When the teeth are to be sharp- JOS. F. TUDER. {L, s] cned straight across, the arm e of the rest is Witnesses:

^ buts trifle lower 'than the center'of the mani J 0s. O. TITTERMARY,

drei AB, so as to bring the mddleof the pey STEPHEN Us'rIcK. 

